One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,6)(4,5)(7,8)(9,10,12,14)(11,15,16,13)(17,18)(19,24)(20,26)(21,28)(22,29)(23,27)(25,31)(30,32)(2,5)(6,8)(9,11)(10,13)(12,16)(14,15)(17,19,23,29)(18,24,27,22)(20,28,30,25)(21,32,31,26)(10,14)(11,16)(17,20,22,31,23,30,24,21)(18,25,19,26,27,28,29,32)(1,3,4,7)(2,6,5,8)(10,14)(13,15)(17,21,24,30,23,31,22,20)(18,26,29,25,27,32,19,28)(2,5)(6,8)(10,14)(13,15)(20,30)(21,31)(25,28)(26,32) involution — undirectedA Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.